KR102258195B1 - Eco-friendly color film former composition for dust suppression using inhibiting open-storage yard - Google Patents

Abstract

The present invention relates to a colored film-forming agent capable of suppressing dust such as earth and sand, wood flour, lime, ash, coke and coal, and a method for using the same. The present invention provides a colored film-forming agent for suppressing dust, which includes a hydrophilic polymer for forming a film, natural polymers (natural polysaccharides) for forming a network structure, a colorant, a surfactant, and water, and forms a colored film after spraying on an object to be treated, and a method for using the same. According to the present invention, the colored film-forming agent has an excellent dust suppression effect and durability by forming a hardened film on the surface of coal and the like, and has visibility so that the presence or absence of spraying can be visually checked. In addition, according to the present invention, the colored film-forming agent has a strong cured film and water resistance to prevent from collapsing or flowing down in rain or strong wind, thereby being harmless to a human body and providing eco-friendly characteristics.

Description

[ECO-FRIENDLY COLOR FILM FORMER COMPOSITION FOR DUST SUPPRESSION USING INHIBITING OPEN-STORAGE YARD}

The present invention relates to a colored film-forming agent for dust suppression, and more particularly, by forming a colored strong cured film on the surface of soil, wood powder, lime, ash, coke and/or coal, etc. An eco-friendly colored film for dust suppression that has improved water resistance and durability of dust suppression, has excellent visibility as a color, and has excellent workability at a fast drying (curing) speed, and is harmless to the human body and has eco-friendly characteristics. It relates to a forming agent and a method of using the same.

Dust (including fine dust) is generated not only on general roads, but also in almost all areas of human life such as various industrial sites. Dust is generated in large quantities in factories (yards) such as soil, wood powder, lime, ash, coke, coal, cement and aggregates, playgrounds, mines, road construction sites, and construction sites, for example.

As a method of controlling dust, spraying (spraying) water is typical, and this is the cheapest method. However, water spraying (spraying) is less effective in suppressing dust than the amount of water used, and in winter, it freezes after spraying, increasing the risk of falls to workers. In summer, it is inconvenient to spray a large amount continuously due to rapid evaporation of water. There is this. In addition, in yards such as soil and coal, a method of covering a dust barrier is used to suppress dust, but the installation of the dust barrier is cumbersome and has a problem that it is easily peeled off by strong winds.

Accordingly, various methods for suppressing dust have been proposed, and representatively, it is a method of spraying (spreading) dust suppressants. Dust inhibitors have an advantage of at least high dust suppression effect and persistence compared to water spray. In general, the dust inhibitor includes a hydrophilic polymer (or water-soluble polymer), a surfactant, an inorganic salt and water, and is colorless. For example, Korean Patent Laid-Open No. 10-2014-0078594, Korean Patent No. 10-1293257, Korean Patent No. 10-1881402, and Japanese Unexamined Patent Application Publication No. 2009-035647 disclose technologies related to the above. have.

However, the dust inhibitor (or scattering dust inhibitor) according to the prior art, for example, has the following problems.

First, the dust inhibitor of the prior art is colorless and has no visibility. Accordingly, it is not possible to visually check whether the dust inhibitor is sprayed or not, so there is a case that excessive spraying or overlapping spraying is performed. For example, a large amount of soil or coal is piled up in a yard such as soil or coal, but despite spraying dust inhibitors, the area is large and colorless and has no visibility (it is difficult to check the presence or absence of spraying with the naked eye), and the operator oversprays it. Or, there is a problem in that the consumption of the dust inhibitor increases due to overlapping injection.

In addition, when inorganic salts such as calcium carbonate are used, there is a concern that ignition may occur, and there are environmental problems such as acidification of the soil. Above all, the dust inhibitor according to the prior art has a problem in that the durability of the dust suppression effect is low, the water resistance is low, and because of the formation of a weak film, it is difficult to use when rainfall and strong winds occur, or the dust suppression ability is poor.

Korean Patent Application Publication No. 10-2014-0078594 Korean Patent Registration No. 10-1293257 Korean Patent Registration No. 10-1881402 Japanese Patent Application Laid-Open No. 2009-035647

Accordingly, an object of the present invention is to provide a colored film forming agent that can be usefully used as a dust inhibitor and a method of using the same.

Specifically, the present invention is a colored film forming agent that is excellent in dust suppression ability and prevents excessive spraying or overlapping spraying by forming a colored, strong hardened film after spraying on soil, wood powder, lime, ash, coke and/or coal, etc. And to provide a method of use thereof.

In addition, the present invention is to provide an eco-friendly colored film forming agent and a method of using the same because it forms a strong hardened film with excellent water resistance, so that it has excellent dust suppression ability even during rainfall or strong winds, and is harmless to soil or water quality. have.

In order to achieve the above object, the present invention,

As a film-forming agent that suppresses dust by forming a colored film on soil, wood powder, lime, ash, coke, and coal,

Hydrophilic polymer forming a film;

Coloring agents;

Surfactants; And

It provides a film forming agent containing water.

According to an embodiment of the present invention, the hydrophilic polymer further includes a crosslinking agent to form a strong film, and the crosslinking agent may be selected from chitosan, a cationic surfactant, an ionic metal compound, or a combination thereof. .

According to a preferred embodiment of the present invention, the hydrophilic polymer includes an acrylic-vinylacetate-chitosan copolymer as a terpolymer of acrylic, vinyl acetate and chitosan.

In addition, according to an embodiment of the present invention, the colored film forming agent is 10 to 60% by weight of a hydrophilic polymer, 5 to 40% by weight of a colorant selected from pigments or pigments, 1 to 10% by weight of a natural surfactant, based on the total weight. It may contain 0.1 to 10% by weight of a natural polymer and 10 to 50% by weight of water that serves as a network (net work) structure. In addition, the colored film forming agent of the present invention is a paste formulation having a color such as white, blue, or green (green mint), and may have a viscosity of, for example, 50 to 2,000 cps.

Additionally, the present invention provides a method of using the colored film forming agent. According to an embodiment of the present invention, the colored film forming agent may be diluted with 5 to 100 times of water and used as a method of spraying it on bulk materials such as soil, wood flour, lime, ash, coke, and coal.

According to the present invention, a colored film forming agent that can be usefully used as a dust inhibitor and has improved properties other than a dust inhibitory ability, and a method of using the same are provided.

Specifically, according to the present invention, dust, such as soil, wood flour, lime, ash, coke, and / or coal, etc. effectively suppress dust, and has an excellent effect of the durability of dust suppression. In addition, according to the present invention, the amount of use can be reduced by preventing excessive spraying and overlapping spraying by having visibility as a color, and forming a strong cured film having excellent water resistance so that it can be used even during rainfall or strong winds. In addition, it is harmless to soil or water and has an eco-friendly effect.

1 is a schematic diagram showing a mixture of an acrylic-vinyl acetate-chitosan copolymer and a natural polymer (natural polysaccharide) constituting the colored film forming agent according to the present invention.
Figure 2 is a flow chart of the use of the colored film forming agent according to the present invention, which shows a process of suppressing dust and odor.
3 and 4 are photographs showing a state after spraying a film forming agent according to an embodiment and a comparative example of the present invention onto the soil.

The term "and/or" used in the present invention is used to mean including at least one or more of the elements listed before and after. The term "one or more" used in the present invention means one or two or more pluralities.

According to the first aspect, the present invention forms a colored film having visibility while effectively suppressing dust (scattering dust) by forming a colored cured film on an object to be treated such as soil, wood powder, lime, ash, coke, and/or coal. (Or dust inhibitor) is provided. According to a second aspect, the present invention provides a method for producing the colored film forming agent. Further, according to the third aspect, the present invention provides a method of using the colored film forming agent. Specifically, according to a third aspect, the present invention provides a method for suppressing dust in a yard using the colored film forming agent to suppress dust.

In the present invention, "dust" is a particulate matter, which includes fine dust or pollen as well as general dust floating in the air (flying dust). The dust includes powders such as coal powder, stone powder, earth powder, gypsum powder, cement powder, concrete powder, pollen, and smoke.

In addition, in the present invention, the object to be treated, that is, the object to be treated to which the colored film forming agent (dust inhibitor) according to the present invention is applied (e.g., spraying, etc.), is the object to be treated with dust generated, and / Or contain the object to be treated where fugitive dust is to be generated. The object to be treated may include, for example, soil, wood powder, lime, ash, coke, coal, iron making, concrete and cement plants, such as yards; Various types of materials such as mines, construction sites, and road construction sites; And/or other bare ground where dust is generated by Balaam; And the like. Hereinafter, in describing the present invention, the object to be treated will be described by taking the soil or coal yard as an example, depending on the case.

The colored film-forming agent (or dust suppressant) according to the present invention is a dust suppression composition that suppresses various kinds of dust (scattering dust) that are scattered, and includes a hydrophilic polymer forming a cured film; Coloring agents; Surfactants for dispersion and emulsification; And water. According to a preferred embodiment, the colored film former according to the present invention further comprises a natural polymer forming a net work structure. The colored film forming agent according to the present invention forms a colored film after being sprayed onto the object to be treated.

The colored film forming agent according to the present invention may have a viscosity (@ 20°C) of 50 to 2,000 cps, including the above components in an appropriate amount, which is also white, blue or green (green mint) It may have a colored paste formulation, such as.

The colored film forming agent according to the present invention is sprayed onto a yard such as soil or coal to form a colored thin cured film on the surface of soil or coal to suppress the generation or scattering of dust, which also has visibility. Specifically, the colored film forming agent according to the present invention has an excellent dust suppression ability, which also has a color such as white, blue, or green (green mint). The colored film forming agent according to the present invention is colored and has visibility, so that the presence or absence of spraying can be visually confirmed, thereby preventing excessive spraying or redundant spraying, thereby preventing excessive consumption (reduction in usage).

[1] hydrophilic polymers

The hydrophilic polymer acts as an active ingredient (film-forming agent) forming a cured film. The hydrophilic polymer is not particularly limited as long as it is water-soluble (hydrophilic) and capable of forming a cured film on the surface of soil, lime, ash, coke, and/or coal. According to an embodiment of the present invention, the hydrophilic polymer may include at least one selected from acrylic-vinylacetate copolymer, polyacrylate-based and vinyl acetate-based, and the like.

The hydrophilic polymer is an acrylic-vinylacetate-chitosan copolymer as a water-soluble crosslinked polymer in which the acrylic-vinyl acetate copolymer is crosslinked with chitosan according to a preferred embodiment of the present invention. It is good to include. The acrylic-vinyl acetate-chitosan copolymer is a ternary copolymer of acrylic, vinyl acetate, and chitosan, which forms a strong cured film on the surface of coal and the like, which is preferable in the present invention.

Specifically, the acrylic-vinyl acetate-chitosan copolymer is mixed with natural polymers (natural polysaccharides) to effectively suppress various kinds of dust and maintain a colored, strong cured film for a long time, resulting in high durability of dust suppression and collapse due to rainfall or strong winds. There is no. In addition, the acrylic-vinyl acetate-chitosan copolymer has superior water and corrosion resistance compared to other hydrophilic polymers, such as acrylic-vinyl acetate copolymers, polyacrylate-based and vinyl-acetate-based, etc. It effectively prevents falling, etc., and has excellent durability, weather resistance, and quick drying properties.

In the present invention, the acrylic-vinyl acetate-chitosan copolymer is a water-soluble crosslinked polymer in which chitosan, a natural polymer, is bonded to acrylic-vinyl acetate as a crosslinking agent for crosslinking properties, wherein the chitosan is at least one in acrylic and/or vinyl acetate. Can be combined. Preferably, the chitosan may be cross-linked to acrylic and/or vinyl acetate in the form of imine (-NH-) bonds. Specifically, the acrylic-vinyl acetate-chitosan copolymer may be usefully used in which an acrylic-vinyl acetate copolymer and chitosan are imine (-NH-) bonded.

According to one embodiment, the acrylic-vinyl acetate-chitosan copolymer may include a compound represented by the following [Chemical Formula 1]. In addition, the following [Chemical Formula 2] shows the generation of [Chemical Formula 1]. As shown in the following [Chemical Formula 2], the compound of [Chemical Formula 1] may be obtained through polymerization of an acrylic-vinyl acetate copolymer and chitosan (CHI). At this time, the vinyl group of the acrylic-vinyl acetate copolymer and the amine (-NH ₂ ) of the chitosan (CHI) are bonded, so that the acrylic-vinyl acetate copolymer and the chitosan (CHI) are at least one imine (-NH-) Have a bond.

[Formula 1]

[Formula 2]

In the above [Formula 1] and [Formula 2], n is an integer. Although n is not particularly limited, it may be, for example, 100 to 5,000, and for a specific example, it may be an integer of 500 to 3,000. In [Chemical Formula 1] and [Chemical Formula 2], * is a connection point. Chitosan (CHI), acrylic-vinyl acetate, or a compound of [Chemical Formula 1] may be bonded to the connection point (*). In addition, the acrylic-vinyl acetate-chitosan copolymer may contain one or more compounds of [Formula 1] in a molecule, and have, for example, 50,000 to 500,000, or 100,000 to 300,000 weight average molecular weight. Is not limited by.

According to another embodiment of the present invention, the acrylic-vinyl acetate-chitosan copolymer may have ionic properties. When the acrylic-vinyl acetate-chitosan copolymer has ionic properties, it has excellent dust suppression ability, dust suppression persistence, water resistance, corrosion resistance, durability, weather resistance, and quick drying, while exhibiting electrical conductivity due to ionic properties, thereby generating static electricity. It can have the ability to prevent. In this way, when it has the ability to prevent static electricity from being generated due to its ionic nature, it is possible to prevent spontaneous ignition when applied to a surface such as coal.

In addition, the acrylic-vinyl acetate-chitosan copolymer may be ionic by, for example, a cationic surfactant and/or an ionic metal compound.

According to one embodiment, when the acrylic-vinyl acetate-chitosan copolymer is polymerized by mixing acryl-vinyl acetate with chitosan and a cationic surfactant, the acrylic-vinyl acetate is crosslinked by chitosan, and chitosan, which is a crosslinking agent. Cationic surfactant may be bonded to to have ionic properties. In this case, the cationic surfactant is, for example, behentrimonium methosulfate, cetrimonium methosulfate, behenyl trimethyl ammonium methosulfate and/or steartrimonium. One or more selected from methosulfate (Steartrimonium methosulfate) may be used, but the present invention is not limited thereto.

According to another embodiment, when the acrylic-vinyl acetate-chitosan copolymer is polymerized by mixing acryl-vinyl acetate with chitosan and an ionic metal compound, metal ions are coordinated with acrylic-vinyl acetate and/or chitosan to form ions. You can have a surname. The ionic metal compound may be, for example, a compound containing a metal cation such as Mg, Na, K, and/or Ca. The ionic metal compound may be selected from, for example, a Ca compound (such as Ca(OH) ₂ ) and/or a K compound (such as _{KNO 3).} The acrylic-vinyl acetate-chitosan copolymer may have ionic properties by coordinating metal ions such as Mg, Na, K, and/or Ca in a molecule by reaction with the ionic metal compound as described above. .

In addition, the acrylic-vinyl acetate-chitosan copolymer is obtained by solution polymerization after adding chitosan to a copolymerization solution containing, for example, a vinyl acetate monomer (or polyvinyl acetate), an acrylic monomer, a polymerization initiator, and a solvent. Can be used. In addition, the ionic acrylic-vinyl acetate-chitosan copolymer is, for example, chitosan and cationic surfactant in a copolymerization solution containing a vinyl acetate monomer (or polyvinyl acetate), an acrylic monomer, a polymerization initiator, and a solvent (and / Or an ionic metal compound) may be added, followed by solution polymerization.

Examples of the acrylic monomer include ethyl acrylate, butyl acrylate, hydroxyethyl acrylate and/or acrylic acid. Examples of the polymerization initiator include benzoyl peroxide, lauryl peroxide and/or azobisisobutyronitrile. And the solvent may be, for example, ethanol, isopropanol, butyl alcohol, ethyl acetate and/or butyl acetate.

According to the present invention, the water-soluble crosslinked polymer as the above tertiary copolymer, that is, the acrylic-vinyl acetate-chitosan copolymer, has at least dust suppression ability, dust suppression persistence, water resistance and quick drying properties, and with this cationic interface In the case of having ionicity by binding of an activator and/or an ionic metal compound, it has the ability to suppress generation of static electricity by itself. In this case, when applied to a target object such as soil, wood powder, lime, ash, coke, and/or coal due to the static electricity suppression ability, spontaneous ignition due to static electricity can be prevented.

The hydrophilic polymer is not particularly limited, but may be included in, for example, 10 to 60% by weight based on the total weight of the colored film forming agent (dust inhibitor) according to the present invention. At this time, when the content of the hydrophilic polymer is less than 10% by weight, it may be difficult to form a strong cured film. In addition, when the content of the hydrophilic polymer exceeds 60% by weight, it may be difficult to work during the blending, and for example, the blending dispersibility of a colorant (colorant or pigment) may be lowered. In consideration of this point, the hydrophilic polymer is preferably contained in an amount of 15 to 50% by weight.

[2] natural polymers

The natural polymer is one that forms a net work structure, which is selected from natural polysaccharides. As the natural polymer, at least one natural polysaccharide selected from maltodextrin, karaya gum, tamarind gum and glucomannan may be used. These natural polysaccharides are applied as an active ingredient for forming a cured film, which also imparts lubricity, elasticity, and wettability to the cured film, thereby improving durability, weather resistance, and durability of dust suppression. The natural polysaccharide is mixed and used with an acrylic-vinyl acetate-chitosan copolymer, which itself forms a net work structure in the cured film, or a cured film by mixing and dispersing with an acrylic-vinyl acetate-chitosan copolymer. To form a network (net work) structure.

1 is a schematic diagram showing a mixture of an acrylic-vinyl acetate-chitosan copolymer and a natural polymer (natural polysaccharide). In FIG. 1, AV represents an acrylic-vinyl acetate copolymer, CHI represents chitosan, and NP represents a natural polysaccharide as a natural polymer.

Referring to Figure 1, the main chain acrylic-vinyl acetate copolymer (AV) is crosslinked with chitosan (CHI) to form an acrylic-vinyl acetate-chitosan copolymer (AV-CHI) as a water-soluble crosslinked polymer. At this time, the acrylic-vinyl acetate copolymer (AV) and chitosan (CHI) are bonded by an imine group (-NH-). In addition, natural polymers (NP) are water-soluble natural polysaccharides, which are mixed and dispersed with acrylic-vinyl acetate-chitosan copolymer (AV-CHI), but molecules and/or clusters of natural polysaccharides (NP) are entangled with each other. It forms a network (net work) structure. The acrylic-vinyl acetate-chitosan copolymer (AV-CHI) and a network-like natural polymer (NP) form a strong cured film after being sprayed onto the object to be treated, and have excellent water resistance, corrosion resistance, and durability.

The natural polymer (natural polysaccharide) may be included in, for example, 0.1 to 20% by weight based on the total weight of the colored film forming agent (dust inhibitor) according to the present invention. In addition, the natural polymer (natural polysaccharide) is mixed with an acrylic-vinyl acetate-chitosan copolymer, but preferably an acrylic-vinyl acetate-chitosan copolymer and a natural polysaccharide are mixed and used in a weight ratio of 4: 0.5 to 2.0. I can.

[3] coloring agents

The coloring agent is for forming a colored film, which may be selected from water-soluble colored forming materials. The colorant may be selected from colorants and/or pigments having a color. The coloring agent is preferably an environmentally friendly material, for example _{, one or more selected from lipid sugar (titanium dioxide, TiO 2} ), talc, gardenia powder, and copper phthalocyanine glycols, etc., It is not limited by these.

The colored film-forming agent (dust inhibitor) according to the present invention can form a colored film such as white, blue, or green color (green mint) by the colorant. The colored film forming agent (dust inhibitor) according to the present invention has visibility that can be visually checked after being sprayed onto an object to be treated by a colored agent. Accordingly, it is possible to check the presence or absence of injection with the naked eye, thereby preventing excessive injection or overlapping injection. In one example, the colorant may be a mixture of gardenia powder and copper phthalocyanine glycol. At this time, green color (green mint) is realized by mixing gardenia powder (yellow) and copper phthalocyanine glycols (blue), and these are natural pigment substances (gardenum powder) and FDA-approved substances (copper phthalocyanine), so they are harmless to the human body. It is eco-friendly.

The colored agent may be included in, for example, 5 to 50% by weight based on the total weight of the colored film forming agent (dust inhibitor) according to the present invention. At this time, when the content of the colorant is less than 5% by weight, the degree of color expression may be insignificant due to the addition thereof, and when the content of the colorant exceeds 50% by weight, relatively hydrophilic polymers and/or natural polymers (natural polysaccharides ), it may be difficult to form a good film due to a low content, or workability may be poor, and the usability (eg spraying, etc.) may be poor due to too high viscosity. In consideration of this point, the coloring agent is preferably included in an amount of 10 to 40% by weight.

[4] surfactants

The surfactant is for dispersion and emulsification, etc., which imparts permeability and wettability (moisture) to the surface of soil, wood powder, lime, ash, coke and/or coal, etc., and each component (hydrophilic polymer, natural polysaccharide And a colorant, etc.) are not particularly limited as long as they provide dispersibility.

As the surfactant, a water-soluble natural surfactant may be used, which may also be usefully used as a nonionic surfactant. In the case of using a nonionic surfactant as the natural surfactant, it is preferable because it provides wettability and improves the permeability and dispersibility of the object to be treated. The natural surfactant may be selected from, for example, polyoxyethylene, sorbitan and/or glucoside, and preferably sorbitan monooleate, sorbitan monolaurate, lauryl glycoside and At least one selected from decylglycosides and the like may be usefully used.

The surfactant may be included in, for example, 1 to 12% by weight based on the total weight of the colored film forming agent (dust inhibitor) according to the present invention. At this time, when the content of the surfactant is less than 1% by weight, the effect of improving surface permeability, wettability and dispersibility according to the addition thereof may be lowered. In addition, when the content of the surfactant exceeds 12% by weight, foam or the like may occur, which may interfere with the formation of a strong cured film. In consideration of this point, the surfactant is preferably contained in an amount of 2 to 10% by weight, or 3 to 8% by weight.

[5] water

The water is used as a dispersion and/or diluting solvent, which may be, for example, tap water, distilled water, ground water and/or purified water. In addition, water may be included in, for example, 10 to 50% by weight, 15 to 40% by weight, or 20 to 30% by weight, based on the total weight of the colored film forming agent (dust inhibitor) according to the present invention, but is limited thereto. It is not.

[6] other ingredients

In addition, the colored film forming agent (dust inhibitor) according to the present invention may include a static electricity generation inhibitor for preventing static electricity.

The static electricity generation inhibitor is not particularly limited as long as it is capable of preventing the generation of static electricity, and it may be useful for a target object such as coal having a high rate of spontaneous ignition. The static electricity generation inhibitor may be selected from cationic surfactants.

The static electricity generation inhibitor may be, for example, behentrimonium methosulfate, cetrimonium methosulfate, behenyl trimethyl ammonium methosulfate and/or steartrimonium methosulfate. Steartrimonium methosulfate), and the like, one or more cationic surfactants may be used. The static electricity generation inhibitor may be included in, for example, 0.5 to 10% by weight based on the total weight of the colored film forming agent (dust inhibitor) according to the present invention.

In addition, according to a preferred embodiment of the present invention, the static electricity generation inhibitor is one or more selected from cetrimonium methosulfate and steartrimonium methosulfate among the cationic surfactants listed above. good. In addition, the colored film forming agent (dust inhibitor) according to the present invention further comprises 3-carboxy-1-adamantane acetic acid as an activator of the static electricity generation inhibitor. desirable.

According to a preferred embodiment of the present invention, the cetrimonium methosulfate and steartrimonium methosulfate are effective in inhibiting static electricity generation compared to other cationic surfactants other than these. In addition, the 3-carboxy-1-adamantane acetic acid effectively activates cetrimonium methosulfate and steartrimonium methosulfate as static electricity generation inhibitors, thereby improving the ability to inhibit static electricity generation.

Specifically, the 3-carboxy-1-adamantane acetic acid can activate the static electricity generation inhibitor even when a small amount of the static electricity generation inhibitor is used to have a high static electricity suppression ability. At this time, based on the total weight of the colored film forming agent (dust inhibitor) according to the present invention, the static electricity generation inhibitor selected from the cetrimonium methosulfate and/or steartrimonium methosulfate may be included in an amount of 0.5 to 5% by weight, and the 3-carboxy-1-adamantane acetic acid may be included in an amount of 0.1 to 3% by weight.

In addition, the colored film forming agent (dust inhibitor) according to the present invention may further contain other functional components or additives, if necessary. The colored film forming agent (dust inhibitor) according to the present invention may further include, for example, a cryoprotectant, an antifoaming agent, a dispersing agent, a storage stabilizer and/or a viscosity modifier. These functional ingredients or additives may be added in an appropriate amount within a range that does not degrade dust suppression ability and water resistance, and these may be included in an amount of 0.01 to 5% by weight based on the total weight of the colored film forming agent (dust inhibitor) according to the present invention, respectively. .

The colored film forming agent (dust inhibitor) according to the present invention described above has at least the following effects.

First, the colored film forming agent (dust inhibitor) according to the present invention suppresses (prevents) scattering of scattered dust (coal powder, etc.) or dust to be scattered by forming a cured film on the surface of an object to be treated such as coal. It retains moisture for a long time due to moisturizing and wettability, and thus has the persistence of dust suppression effect.

In particular, the colored film forming agent (dust inhibitor) according to the present invention is sprayed onto the object to be treated, and then forms a colored film to have visibility. Accordingly, as described above, it is possible to visually check the presence or absence of injection, thereby preventing excessive injection or overlapping injection, thereby reducing consumption. In addition, while forming a strong cured film, it has excellent water resistance and corrosion resistance, effectively preventing collapse or run-down of the stacks caused by rainfall or strong winds.

In addition, the quick-drying property improves workability, is harmless to the human body and is eco-friendly, and prevents spontaneous ignition of coal powder, thereby preventing coal loss and fire.

Meanwhile, when the colored film forming agent (dust inhibitor) according to the present invention is applied to an object to be treated for dust suppression, it can be applied through, for example, spraying. At this time, when applied as a spray method, use it after diluting in separate water. According to one embodiment, it can be used through the method of use of the present invention as follows.

The colored film forming agent (dust inhibitor) according to the present invention is used in a method of diluting water at a weight ratio (or volume ratio) of 5 to 100 times and spraying (spreading) water thereon. Specifically, the colored film forming agent of the present invention: water = 1: 5 to obtain a treatment liquid (dilution liquid) diluted in a weight ratio (or volume ratio) of 5 to 100, and then the treatment liquid (diluent) is sprayed with a device (e.g., It is used as a method of forming a cured film by spraying (spraying) it on an object to be treated such as coal using a sprinkler, etc.). 2 is a flow chart showing the use of the colored film-forming agent (dust inhibitor) according to the present invention, which shows a process of suppressing dust and odor through the colored film-forming agent of the present invention.

In addition, the treatment liquid (diluent), specifically, a treatment liquid (diluent) obtained by diluting water at a weight ratio (or volume ratio) of 5 to 100 times in the colored film forming agent of the present invention (diluting liquid) is, for example, 20 to 600 cps. It can have viscosity. In the case of using a treatment liquid having such a viscosity, a good cured film is formed when sprayed on an object to be treated such as coal, which can also improve quick-drying and spraying workability (spreading by sprinkling, etc.).

At this time, when the viscosity of the treatment solution (diluent) is less than 20 cps, it is difficult to form a good cured film, and when the viscosity exceeds 600 cps, curing may take a long time or spraying may not be free. In consideration of this point, it is preferable that the treatment liquid (diluent) has a viscosity of 50 to 500 cps. In the present invention, the viscosity is a measured value at room temperature, which is a viscosity measured at an actual use site such as a coal yard. Viscosity is a value measured at a temperature within the range of 5°C to 35°C, or 15°C to 30°C, for example.

Hereinafter, examples and comparative examples of the present invention are illustrated. The following examples are provided merely to help the understanding of the present invention, and the technical scope of the present invention is not limited thereby. In addition, the following comparative examples do not imply a prior art, which is provided only for comparison with the examples.

[Example 1]

Unlike agitators, water (distilled water) is put in a container, and then a ternary copolymer acrylic-vinylacetate-chitosan copolymer (acrylic-vinylacetate-chitosan copolymer) as a hydrophilic polymer (film-forming agent), and a natural polymer (polysaccharide). Maltodextrin and glucomannan, sorbitan monolaurate as a surfactant, and a commercial product (BYK-154) as a dispersant were added and stirred in an appropriate amount. In addition, a colorant obtained by mixing gardenia powder and copper phthalocyanine glycol at a weight ratio of 1:1 was further added and stirred to prepare a film-forming agent of a colored paste having a viscosity of about 180 cps (@ 20°C). .

At this time, the ternary copolymer acrylic-vinyl acetate-chitosan copolymer as the hydrophilic polymer is a water-soluble crosslinked polymer in which an acrylic-vinyl acetate copolymer and chitosan are crosslinked by an imine (-NH-) bond, which is vinyl acetate, 2-ethyl A chitosan solution was added to a copolymerizable solution containing hexyl acrylate, hydroxyethyl acrylate, acrylic acid and azobisisobutyronitrile to be crosslinked and polymerized, and was purchased and used from Hansung Polymer in Korea. Specific components and contents of the film forming agent according to the present embodiment are shown in Table 1 below. In the following [Table 1], the content of each component is a percentage (% by weight) based on the total weight of the film forming agent.

[Example 2]

In contrast to Example 1, it was carried out in the same manner as in Example 1, except that the type of the hydrophilic polymer (film-forming agent) was different.

Specifically, in this example, a binary copolymer acrylic-vinylacetate copolymer was used as the hydrophilic polymer. At this time, the acrylic-vinyl acetate copolymer was a copolymerization solution comprising vinyl acetate, 2-ethylhexyl acrylate, hydroxyethyl acrylate, and acrylic acid was polymerized, which was purchased and used from Hansung Polymer. Specific components and contents of the film forming agent according to the present embodiment are as shown in Table 1 below.

[Example 3]

In contrast to Example 1, it was carried out in the same manner as in Example 1, except that the type of the hydrophilic polymer (film forming agent) was different. Specifically, in this Example, mixing of the acrylic-vinyl acetate-chitosan copolymer (tertiary copolymer) used in Example 1 and the acrylic-vinyl acetate copolymer (binary copolymer) used in Example 2 as a hydrophilic polymer Was used. Specific components and contents of the film forming agent according to the present embodiment are as shown in Table 1 below.

[Comparative Example 1]

In contrast to Example 1, the same was carried out except that the type of the hydrophilic polymer (film forming agent) was different, and a natural polymer (polysaccharide) and a coloring agent were not used. Specific components and contents of the film forming agent according to the present comparative example are as shown in Table 1 below.

With respect to the film forming agent according to each Example and Comparative Example prepared as above, water resistance, acid resistance (corrosion resistance), and dust suppression ability were evaluated as follows. The results are shown in the following [Table 1].

<Test Example 1>: Water resistance evaluation

The film forming agent according to each example and comparative example was coated on a glass plate and then dried to form a coating film. Thereafter, for the coated specimens according to each of the Examples and Comparative Examples, water resistance and corrosion resistance were evaluated through a salt spray test. The salt spray test was performed by spraying salt water on each coated specimen for 30 minutes under the conditions of an aqueous solution of NaCl with a concentration of salt water of 5% by weight, a test temperature of 35 ± 0.5℃, a spray pressure of 0.098 ± 0.002 MPa, and a spray volume of 1.4ml/h at 80㎠. Next, it was evaluated by visually checking whether or not discoloration of the coating film occurred and whether it flowed down.

At this time, in the following [Table 1], if there is no discoloration according to whether or not discoloration occurs, it is indicated as "no discoloration", and in the case of discoloration, it is indicated as "discoloration". If there was runoff, it was marked as "dissolved".

<Test Example 2>: Acid resistance evaluation

The film forming agent according to each example and comparative example was coated on a glass plate and then dried to form a coating film. Thereafter, the coated specimens according to each of the Examples and Comparative Examples were impregnated in an aqueous sulfuric acid solution (sulfuric acid concentration of 38 wt%) at about 40° C. for 72 hours and then taken out to visually determine whether a discoloration or pin hole occurred in each coating film. It was confirmed and evaluated. After impregnation in the sulfuric acid aqueous solution, when no discoloration or pinhole occurs, "acid resistance", when discoloration occurs, "discolor", and when a pinhole occurs, it is indicated in [Table 1].

<Test Example 3>: Evaluation of dust suppression ability

First, a diluted solution was prepared by adding 50 times (by volume) water to the film forming agent according to each Example and Comparative Example. Thereafter, each sample of the dilution solution was sprayed onto a pile of coal to dry it, and then the dust suppression ability was evaluated by radiating a strong wind onto the pile of coal. Specifically, a pile of coal was piled up in a closed space, and the specimens of each diluent were sprayed onto the pile of coal, dried sufficiently, and then strong wind was radiated to each pile of coal using a blower. All conditions are the same. After strong wind spinning, when the scattering of the coal powder hardly occurs, "good", and when the scattering of the coal powder occurs, it is expressed as "flying", and is shown in Table 1 below.

<Results of evaluation of composition and properties of film forming agents according to each example and comparative example> Remark Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Hydrophilic polymer
(Film forming agent) AV-CHI ⁽¹⁾ 15.0 - 10.0 - - AV ⁽²⁾ - 15.0 5.0 - - PAM ⁽³⁾ - - - 15.0 - Natural polymer
(Polysaccharide) Maltodextrin 3.0 3.0 3.0 - 10.0 Glucomannan 3.0 3.0 3.0 - 10.0 Nonionic surfactant SBML ⁽⁴⁾ 5.0 5.0 5.0 5.0 5.0 Colorant Y-Cu ⁽⁵⁾ 8.5 8.5 8.5 - Dispersant D ⁽⁶⁾ 1.5 1.5 1.5 1.5 1.5 Distilled water Balance Balance Balance Balance Balance Water resistance evaluation No discoloration/water resistant Discoloration/dissolution No discoloration/water resistant No discoloration/dissolution Discoloration/dissolution Acid resistance evaluation Acid resistance Pinhole Acid resistance discoloration Discoloration/pinhole Dust suppression ability evaluation Good Good Good Flying Flying
(1) AV-CHI : As ternary copolymer, acrylic-vinyl acetate-chitosan copolymer
(acrylic-vinylacetate-chitosan copolymer)
(2) AV: As a binary copolymer, an acrylic-vinyl acetate copolymer
(acrylic-vinylacetate copolymer)
(3) PAM: polyacryl amide
(4) SBML: sorbitan monolaurate
(5) Y-Cu: Gardenia powder and cocamidopropyl betaine
(6) D: Phosphorus-based dispersant (BYK-154 product)

As shown in [Table 1], when comparing Examples 1 to 3 and Comparative Examples 1 to 2, a tertiary copolymer acrylic-vinyl acetate-chitosan copolymer (AV-CHI) or a binary copolymer as a hydrophilic polymer When the combined acrylic-vinyl acetate copolymer (AV) is used, and a natural polysaccharide is further included therewith (Examples 1 to 3), compared to the other (Comparative Examples 1 to 2), a strong cured film is formed. It was found that it was excellent in water resistance and acid resistance (corrosion resistance), and was also effective in dust suppression ability (no scattering caused by strong winds).

In addition, when comparing Examples 1 to 3, it was found that the properties were different depending on the type of the hydrophilic polymer. As shown in [Table 1], when the terpolymer acrylic-vinyl acetate-chitosan copolymer (AV-CHI) is included (Examples 1 and 3), the binary copolymer acrylic-vinyl acetate co It was found that the water resistance and durability were superior to the case of using the polymer (AV) (Example 2).

Specifically, acrylic-vinyl acetate-chitosan copolymer (AV-CHI), that is, a copolymer in which chitosan is crosslinked with an imine (-NH-) bond to an acrylic-vinyl acetate copolymer (AV-CHI) is an acrylic-vinyl acetate copolymer. Compared with the polymer (AV), it was found that there was no discoloration, runoff (dissolution), and occurrence of pinholes for brine and sulfuric acid. This means that when applied to a yard such as soil or coal, acrylic-vinyl acetate-chitosan copolymer (AV-CHI) has superior water resistance and acid resistance to precipitation (acid ratio) compared to acrylic-vinyl acetate copolymer (AV). do.

On the other hand, the attached FIGS. 3 and 4 are photographs after preparing a diluent in which 50 times (by volume) of water is added to the film forming agent, and spraying it onto soil wet with water. 3 is a soil pile using the film forming agent according to Example 1, and FIG. 4 is a soil pile using the film forming agent according to Comparative Example 1. When the film forming agent according to Example 1 was applied (FIG. 3), it had a color and maintained a dry state for a long time, but when the film forming agent according to Comparative Example 1 was used (FIG. 4), it was colorless and over time. The phenomenon of getting wet gradually by the moisture of the soil was observed. This means that the film forming agent of Example 1 forms a stronger cured film than that of Comparative Example 1 and has excellent water resistance.

In addition, as shown in FIG. 3, when the film forming agent according to Example 1 is used, a mixture of gardenia powder (yellow) and copper phthalocyanine glycol (blue) is used as a coloring agent to realize the color of green mint. Could.

[Examples 4 to 6]

In contrast to Example 1, in the same manner as in Example 1, a static electricity generation inhibitor was further added or an static electricity generation inhibitor and an activator of the static electricity generation inhibitor were further added according to each example. At this time, as the static electricity generation inhibitor, cetrimonium methosulfate and steartrimonium methosulfate were used, and the activator of the static electricity generation inhibitor was 3-carboxy-1-adamantane acetic acid (3-carboxy). -1-adamantane acetic acid) was used. Specific components and contents of the film forming agent according to each example (4 to 6) are as shown in Table 2 below.

In addition, water resistance and antistatic ability were evaluated for the film forming agents according to Examples 4 to 6. At this time, the water resistance was evaluated in the same manner as in Example 1, and the static electricity generation inhibiting ability was evaluated by the following method. In addition, for the film forming agent according to Example 1, the ability to inhibit static electricity generation was evaluated in the following manner. The above results are shown in the following [Table 2].

<Evaluation of static electricity generation suppression ability>

The ability to suppress the generation of static electricity was evaluated by the surface resistance value. First, a film forming agent according to each example was coated on a glass plate and then dried to form a cured film. Thereafter, for the coated specimens according to each example, surface resistance [Ω/sq] was measured using a sheet resistance meter (4-point probe) according to ASTM D 257. At this time, the surface resistance was measured under the conditions of an applied voltage of 10V, a temperature of 22 ± 2°C, and a relative humidity of 50 ± 5% RH.

<Results of evaluation of the composition and properties of the film forming agent according to each example> Remark Example 1 Example 4 Example 5 Example 6 Hydrophilic polymer
(Film forming agent) AV-CHI ⁽¹⁾ 15.0 15.0 15.0 15.0 Natural polymer
(Polysaccharide) Maltodextrin 3.0 3.0 3.0 3.0 Glucomannan 3.0 3.0 3.0 3.0 Nonionic surfactant SBML ⁽⁴⁾ 5.0 5.0 5.0 5.0 Colorant Y-Cu ⁽⁵⁾ 8.5 8.5 8.5 8.5 Dispersant D ⁽⁶⁾ 1.5 1.5 1.5 1.5 Static electricity suppressant
(Cationic surfactant) CT-S ⁽⁷⁾ - 2.5 4.5 1.5 ST-S ⁽⁸⁾ - 1.5 4.5 1.5 Activator CA-Ac ⁽⁹⁾ - - - 0.8 Distilled water Balance Balance Balance Balance Water resistance evaluation No discoloration/water resistant No discoloration/water resistant Discoloration/water resistance No discoloration/water resistant Surface resistance [Ω/sq]
(x 10 ⁶ ) 4.83 4.06 3.62 3.74
(1) AV-CHI : As ternary copolymer, acrylic-vinyl acetate-chitosan copolymer
(acrylic-vinylacetate-chitosan copolymer)
(4) SBML: sorbitan monolaurate
(5) Y-Cu: Gardenia powder and cocamidopropyl betaine
(6) D: Phosphorus-based dispersant (BYK-154 product)
(7) CT-S: Cetrimonium methosulfate
(8) ST-S: Steartrimonium methosulfate
(9) CA-Ac: 3-carboxy-1-adamantane acetic acid

As shown in [Table 2], it was found that when the static electricity generation inhibitor was further added (Examples 4 to 6), the static electricity generation suppressing ability could be improved compared to the case where the static electricity generation inhibitor was further added (Example 1). In contrast to Example 4 and Example 5, when the content of the static electricity generation inhibitor was large (Example 5), it was found that the static electricity generation suppressing ability was advantageous but the water resistance was inferior (discoloration occurred).

In addition, in contrast to Example 4 and Example 6, when 3-carboxy-1-adamantane acetic acid (CA-Ac) was further added as an activator of the static electricity generation inhibitor (Example 6), otherwise. In contrast to (Example 4), despite the low content of the static electricity generation inhibitor, it was found that it had a high static electricity generation suppression ability.

Claims (5)

Hydrophilic polymer forming a film;
Natural polymers forming a net work structure;
Coloring agents;
Surfactants; And
Contains water,
After spraying on the object to be treated, a colored film is formed,
The natural polymer includes one or more natural polysaccharides selected from maltodextrin, karaya gum, tamarind gum and glucomannan,
The coloring agent dust inhibitor, characterized in that the mixture of gardenia powder and copper phthalocyanine glycols.
The method of claim 1,
The hydrophilic polymer,
The acrylic-vinyl acetate copolymer comprises an acrylic-vinyl acetate-chitosan copolymer crosslinked with chitosan,
Dust inhibitor, characterized in that the acrylic-vinyl acetate copolymer and chitosan are imine bonded.
The method of claim 2,
The acrylic-vinyl acetate-chitosan copolymer is a dust inhibitor comprising a compound represented by the following [Chemical Formula 1].
[Formula 1]

(In Chemical Formula 1, n is an integer of 500 to 3,000, and * is a connection point.)
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